Quick story, from Aesop. A farmer who had a quarrelsome family could not find a way of reconciling their differences. So he called his sons together and told them to lay a bunch of sticks before him. He tied the sticks together in a bundle, and asked one son after another to pick them up and break them. They all tried but in vain.
He then untied the bundle and handed a stick to each and invited them to break it. Each son did it easily. He then turned to his sons and said
My sons, as long as you remain united, you are a match for all your enemies, but differ and separate and you are undone"
I think this stands for itself...